<template>
  <div>
    <!--面包屑导航-->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!--卡片区域-->
    <el-card class="box-card">
      <!--搜索区域-->
      <!-- gutter表示列于列之间的距离-->
      <el-row :gutter="20">
        <!--第一个输入框 :span表示所占宽度-->
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">

          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>

        </el-col>
      </el-row>
      <!--用户列表区-->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <!--另外一个组件涉及到组件传值的问题,作用域插槽-->
          <!--更改状态区-->
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChange(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作">
          <!--操作区-->
          <template slot-scope="scope">
            <el-button type="primary"
                       icon="el-icon-edit"
                       size="mini"
                       @click="showEditDialog(scope.row.id)"
            ></el-button>
            <!--删除-->
            <el-button type="danger"
                       icon="el-icon-delete"
                       size="mini"
                       @click="removeUserById(scope.row.id)"
            ></el-button>
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!--分页区域-->
      <el-pagination
          @size-change="handleSizeChange"
          @current-change="handleCurrentChange"
          :current-page="queryInfo.pagenum"
          :page-sizes="[1, 2, 5, 10]"
          :page-size="queryInfo.pagesize"
          layout="total, sizes, prev, pager, next, jumper"
          :total="total">
      </el-pagination>
    </el-card>
    <!--添加用户对话框-->
    <el-dialog
        title="添加用户"
        :visible.sync="addDialogVisible"
        width="50%"
        @close="addDialogClosed">
      <!--内容主体区-->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!--底部按钮区-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!--修改用户对话框-->
    <el-dialog
        title="用户信息修改"
        :visible.sync="editDialogVisible"
        width="50%">
      <!--内容区域-->
      <el-form
          :model="editForm"
          :rules="editFormRules"
          ref="editFormRef"
          label-width="70px"
          @close="editDialogClosed">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!--底部区域-->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!--分配角色的对话框-->
    <el-dialog
        title="分配角色"
        :visible.sync="setRoleDialogVisible"
        width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户： {{ userInfo.username }}</p>
        <p>当前的角色： {{ userInfo.role_name }}</p>
        <p>
          分配新角色
          <el-select v-model="selectRoleId" placeholder="请选择">
            <el-option
                v-for="item in rolesList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: "Users",
  data() {
    // 邮箱验证
    let checkEmail = (rule, value, callback) => {
      const regEmail = /\w+([-+.]\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*/
      if (regEmail.test(value)) {
        return callback()
      } else {
        callback(new Error('请输入合法的邮箱'))
      }
    };
    // 手机号规则
    let checkMobile = (rule, value, callback) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return callback()
      } else {
        callback(new Error('请输入合法的手机号'))
      }
    };
    return {
      // 获取用户列表的数据
      queryInfo: {
        query: "",
        // 当前页数
        pagenum: 1,
        // 每页显示的数据
        pagesize: 2
      },
      userList: [],
      total: 0,
      // 控制添加用户对话框的显示与隐藏
      addDialogVisible: false,
      // 添加用户的表达数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      // 添加用户的验证规则
      addFormRules: {
        username: [
          {required: true, message: '请输入用户名', trigger: 'blur'},
          {min: 3, max: 10, message: '用户名长度在 3 到 10 个字符之间', trigger: 'blur'}
        ],
        password: [
          {required: true, message: '请输入密码', trigger: 'blur'},
          {min: 6, max: 15, message: '密码长度在 6 到 15 个字符之间', trigger: 'blur'}
        ],
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机号', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      // 控制修改用户对话框的显示与隐藏
      editDialogVisible: false,
      // 查询到的用户对象
      editForm: {},
      editFormRules: {
        email: [
          {required: true, message: '请输入邮箱', trigger: 'blur'},
          {validator: checkEmail, trigger: 'blur'}
        ],
        mobile: [
          {required: true, message: '请输入手机号', trigger: 'blur'},
          {validator: checkMobile, trigger: 'blur'}
        ]
      },
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色id值
      selectRoleId: ''
    }
  },
  created() {
    // 发送网络数据请求
    this.getUserList()

  },
  methods: {
    async getUserList() {
      const {data: res} = await this.$http.get('users', {params: this.queryInfo})
      // console.log(res)
      if (res.meta.status !== 200) return this.$message.error("获取用户列表失败");
      this.userList = res.data.users;
      this.total = res.data.total;
    },
    // 监听页码值改变的事件
    handleSizeChange(newSize) {
      console.log(newSize);
      this.queryInfo.pagesize = newSize;
      // 重新发送网络请求
      this.getUserList()
    },
    // 监听页码值改变的事件
    handleCurrentChange(newPage) {
      // console.log(newPage)
      this.queryInfo.pagenum = newPage;
      // 重新发送网络请求
      this.getUserList()
    },
    // 监听switch开关状态改变
    async userStateChange(userInfo) {
      console.log(userInfo);
      // this.$http.put('users/:uId/state/:type')
      const {data: res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      console.log(res)
      if (res.meta.status !== 200) {
        // 更新失败就将用户状态返回到修改前的状态
        userInfo.mg_state = !userInfo.mg_state;
        return this.$message.error('更新用户状态失败')
      }
      this.$message.success('修改用户状态成功')
    },
    // 重置内容区
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 点击按钮 添加新用户
    addUser() {
      // 校验输入正确与否
      this.$refs.addFormRef.validate(async valid => {
        // console.log(valid);
        if (!valid) return
        // 可以发起网络请求
        const {data: res} = await this.$http.post('users', this.addForm)
        // console.log(res)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败')
        }
        this.$message.success('添加用户成功')
        // 隐藏添加用户的对话框
        this.addDialogVisible = false;
        // 重新获取用户列表
        this.getUserList()
      })
    },
    // 用于展示用户编辑数据
    async showEditDialog(id) {
      const {data: res} = await this.$http.get('users/' + id,)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data;

      this.editDialogVisible = true;
      console.log(id);
    },
    // 监听修改用户对话框的关闭事件
    editDialogClosed() {
      // 重置对话框
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息并提交
    editUserInfo() {
      this.$refs.editFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        // 发起修改用户信息的请求
        const {data: res} = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        // 关闭对话框
        this.editDialogVisible = false;
        this.getUserList()
        this.$message.success('更新用户信息成功')
      })
    },
    async removeUserById(id) {
      // console.log(id)
      // 弹框询问用户是否删除数据
      const configResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => {
        return err
      })
      // 如果用户确定删除返回的是一个字符串，如果用户取消，则返回一个
      console.log(configResult);
      if (configResult !== 'confirm') {
        return this.$message.info('取消删除')
      }
      // console.log('确定删除')
      const {data: res} = await this.$http.delete('users/' + id);
      // console.log(res)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户信息失败')
      }
      this.$message.success('删除用户信息成功')
      this.getUserList()
    },
    async setRole(userInfo) {
      this.userInfo = userInfo;
      // 在展示对话框之前获取所有角色列表
      const {data: res} = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.rolesList = res.data
      console.log(this.rolesList)
      this.setRoleDialogVisible = true;
    },
    // 点击按钮 分配角色按钮绑定
    async saveRoleInfo() {
      if(!this.selectRoleId)  {
        return this.$message.error('请选择用户要分配的角色')
      }

      const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role` , {rid: this.selectRoleId})
      if(res.meta.status !== 200) {
        return this.$message.error('更新用户信息失败');
      }
      this.$message.success('分配角色成功');
      await this.getUserList()
      this.setRoleDialogVisible = false;
    },
    // 分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectRoleId = '';
      this.userInfo = ''
    }
  }
}
</script>

<style scoped lang="less">

</style>